Question

There are main two types of forces which are being stated in the free body diagram, they are generally the resultant forces which are being acted over the body. Which are they?

(a) Normal and Frictional

(b) Normal and Vertical

(c) Vertical and Frictional

(d) Normal and Fractional

I had been asked this question during a job interview.

My query is from Characteristics of Dry Friction topic in division Friction of Engineering Mechanics

Answer 1

The correct choice is (a) Normal and Frictional

The explanation is: The net forces acting on the body is shown with the help of the resultant forces. There are two types, first the frictional and the second is the normal. This is because the resultant forces have the sum of all the forces which are acting in the direction which is same.